1. State Key Laboratory of Superhard Materials
2. Key Laboratory of Automobile Materials of MOE
3. School of Materials Science and Engineering
4. Jilin University
5. Changchun 130012
6. School of Science
7. Changchun University of Science and Technology
8. Changchun 130022
9. China
10. Max Planck Institute of Microstructure Physics
11. Halle (Saale)
12. Germany